Structural DNA that organizes the structure of chromosome, is located in

Options

A. Centromere
B. Telomere
C. Satellites
D. All the three

Answer

To solve the question regarding the location of structural DNA that organizes the structure of chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Structural DNA**:
- Structural DNA refers to the DNA that plays a role in maintaining the structure and organization of chromosomes. This includes regions that are crucial for the integrity and stability of chromosomes.

2. **Identifying Key Regions of Chromosomes**:
- Chromosomes have several important regions, including:
- **Centromere**: The region that joins two sister chromatids and is essential for proper chromosome segregation during cell division.
- **Telomeres**: The ends of chromosomes that protect them from deterioration or fusion with neighboring chromosomes.
- **Satellite DNA**: Repetitive sequences that may be found in certain regions of chromosomes but do not play a direct role in structural organization.

3. **Analyzing the Options**:
- The options given are:
- **Centromere**
- **Telomere**
- **Satellite**
- **All of the three**
- Among these, the centromere is specifically known for its structural role in organizing chromosomes.

4. **Conclusion**:
- The structural DNA that organizes the structure of chromosomes is primarily located in the **centromere**.

### Final Answer:
The structural DNA that organizes the structure of chromosomes is located in the **centromere**.

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